NAME
ustore, ustore_8,
ustore_16, ustore_32,
ustore_64, ustore_char,
ustore_short, ustore_int,
ustore_long, ustore_ptr
— store data in
user-space
SYNOPSIS
#include
<sys/systm.h>
int
ustore_8(const
uint8_t *uaddr, uint8_t
val);
int
ustore_16(const
uint16_t *uaddr, uint16_t
val);
int
ustore_32(const
uint32_t *uaddr, uint32_t
val);
int
ustore_64(const
uint64_t *uaddr, uint64_t
val);
int
ustore_char(const
unsigned char *uaddr,
unsigned char val);
int
ustore_short(const
unsigned short *uaddr,
unsigned short val);
int
ustore_int(const
unsigned int *uaddr,
unsigned int val);
int
ustore_long(const
unsigned long *uaddr,
unsigned long val);
int
ustore_ptr(const
void **uaddr, void
*val);
DESCRIPTION
Theustore functions provide a way to store a value to
single memory cells in user-space. In each case, the value
val is stored in the user-space memory location
referenced by uaddr.
The ustore_64 function is only available
on systems employing the ‘LP64’ memory model, which can be
determined by testing for the presence of the _LP64
C preprocessor macro.
RETURN VALUES
The ustore functions return 0 on success
and an error number on failure.